How to keep your gym bag from smelling like a hobo's armpits

I work out almost every morning and my shirt is drenched. I throw it in my bag and go to work for the day while the bag sits in the hot trunk of my car. When I get home, I take it out but I think it's already smelled up my bag. I've already been thru 2 bags in the last 6 months because they aren't machine washable, and I've tried to febreze them, and it's even worse with febreze then without... How do you keep your gym bag stank free? Or is it a given you have to replace it all the time?

Get yourself a big ziplock bag and put your sweaty gear in there. You wouldn't even need to store them in your gym bag, but if you did, at least the zip lock keeps the sweat from crossing over to the fabric of the gym bag.

This isn't really that hard to understand. You sweat, then you put a wet piece of fabric against another piece of fabric that is dry.....moisture moves from wet areas to dry areas.....so your gym bag will get wet. As it sits and ferments......well, it does what it does. You're either going to have to put some kind of barrier in there to limit the contact between them....or wash your gym bag every day.

I work out almost every morning and my shirt is drenched. I throw it in my bag and go to work for the day while the bag sits in the hot trunk of my car. When I get home, I take it out but I think it's already smelled up my bag. I've already been thru 2 bags in the last 6 months because they aren't machine washable, and I've tried to febreze them, and it's even worse with febreze then without... How do you keep your gym bag stank free? Or is it a given you have to replace it all the time?